Messages in this thread | | | Date | Mon, 23 Nov 2020 11:47:06 +0000 | From | Will Deacon <> | Subject | Re: [PATCH v5 3/7] iommu: Allow the dma-iommu api to use bounce buffers |
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On Mon, Nov 23, 2020 at 07:40:57PM +0800, Lu Baolu wrote: > On 2020/11/23 18:08, Christoph Hellwig wrote: > > > + /* > > > + * If both the physical buffer start address and size are > > > + * page aligned, we don't need to use a bounce page. > > > + */ > > > + if (IS_ENABLED(CONFIG_SWIOTLB) && dev_is_untrusted(dev) && > > > + iova_offset(iovad, phys | org_size)) { > > > + aligned_size = iova_align(iovad, org_size); > > > + phys = swiotlb_tbl_map_single(dev, > > > + phys_to_dma(dev, io_tlb_start), > > > + phys, org_size, aligned_size, dir, attrs); > > > > swiotlb_tbl_map_single takes one less argument in 5.10-rc now. > > > > Yes. But Will's iommu/next branch is based on 5.10-rc3. I synced with > him, we agreed to keep it 5.10-rc3 and resolve this conflict when > merging it.
That's right, although I failed to appreciate the conflict was due to a change in function prototype rather than just a context collision. So I've updated the vt-d branch to contain the stuff fron Konrad:
https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for-next/iommu/vt-d
Sorry for messing you around!
Will
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